Ontika Subseries
| Belongs to | Öland Series |
| Type | chronostratigraphy |
| Rank | Subseries |
| Scope | regional |
| Status | formal standard |
| Author | Kaljo et al. |
| Year | 1958 |
| Age top (Ma) | 463.8 |
| Age base (Ma) | 483.4 |
| Age (Ma) | Ordovician |
| Age reference | Webby et al., 2004 (eds) |
| Date added | 2011-07-20 |
| Date changed | 2012-01-06 |
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